resize2fs

Resize an ext2, ext3 or ext4 filesystem.

Does not resize the underlying partition. The filesystem may have to be unmounted first, read the man page for more details.

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• Automatically resize a filesystem:

resize2fs {/dev/sdXN}

• Resize the filesystem to a size of 40G, displaying a progress bar:

resize2fs -p {/dev/sdXN} {40G}

• Shrink the filesystem to its minimum possible size:

resize2fs -M {/dev/sdXN}

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